Web Forms :: Populate DropDownList Control Using LINQ
Oct 4, 2013How to use linq in asp.net like insert, update, delete and search the records,
Bind Gridview using linq
Bind Dropdown using linq
Similar Messages:
DataSource Controls :: LINQ Load Collection To Populate Dropdownlist?
Apr 5, 2010I have a partial class extending my Entity Model. I'd like to write a method that returns a collection of types from my entity framework model. For example, I'd like to get all the states to populate a drop down list. So I've written a method called getallstates(), similar to the example below:
[Code]....
I tried returning a list of Objects, and a list of states to my calling method to be used to bind to a drop down list. However I get an error that:
Server Error in Application. Unable to cast object of type 'System.Data.Objects.ObjectQuery to type 'System.Collections.Generic.List`1[System.Object]'.
What should my return type be for this function?
Forms Data Controls :: Populate Detailsview Control From Dropdownlist Control?
Mar 7, 2010I've got a dropdownlist control that the user can select an an employee name and that should then fill in the detailsview control with specific information about that employee.
My dropdownlist control works fine and I do have AutoPostBack set to true. For some reason my detailsview doesn't work. There's no error message. The detailsview control just doesn't show up.
Here's my code:
This is the sqldatasource control for the dropdownlist control:
[Code]....
This is the sqldatasource control for the detailsview control:
[Code]....
Dropdownlist control:
[Code]....
Detailsview control:
[Code]....
Web Forms :: Populate TreeView Parent And Child Nodes In DropDownList Control?
Sep 20, 2015C#- bind treeview runtime using dataset and data table
simple example
Web Forms :: Populate DropDownList Based On RadioButtons And Populate GridView Based On DropDownList
Oct 5, 2012there is a radio button, a dropdownlist. radiobuttons are OY, OTY,VDA ( in my database there are fields named OY.OTY,VDA) if i select OY in my radio button the data should be displayed from field OY in dropdownlist and if i select OTY in my radio button the data should be displayed from OTY field in dropdownlist is it possible. there is a sqldatasource for dropdownlist .
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:MS16ConnectionString %>"
SelectCommand="SELECT DISTINCT OY FROM COURSE_INTAKE">
</asp:SqlDataSource>
THE SELECTED DROPDOWNLIST DATA IS REQUIRDE TO BE DISPLYED IN A GRIDVIEW.
Web Forms :: Populate Multiple Cascading DropDownList On Selection On Main DropDownList
Aug 12, 2012i have 3 drop down list in my page
1-ddlzone1
2-ddldistrict1
3-ddlstore1
this is  ddlzone1 code
protected void DDLzone1_SelectedIndexChanged(object sender, EventArgs e) {
DDLstore1.Items.Clear();
DDLstore1.Items.Add(new ListItem("select center", ""));
DDLstore1.AppendDataBoundItems = true;
SqlCommand _cmd = new SqlCommand("selectcenter", _cn);
[CODE].....
ADO.NET :: Linq And Webservices / Create A Webservice Method Using LINQ Technology And To Populate A Dropdown In a Form?
Oct 6, 2010I am struggling to create a webservice method using LINQ technology and to populate a dropdown in a form. Here is the Webservice code.
[WebMethod]
public
string[] GetAllCountries()
{
LinqClassesDataContext db =
new
LinqClassesDataContext();
var q =
from c
in db.ListContinents()select
c;
return q.ToList() ;
}
And here is the form code behind
protectedvoid
Page_Load(object sender,
EventArgs e)
{
WSClass WS =
new
WSClass();//bool
ds = WS.GetAllCountries();
var v = WS.GetAllCountries();
ddlContinent.DataSource = v;
ddlContinent.DataBind();
}
Web Forms :: Populate Dropdownlist From Another Dropdownlist Selection?
Dec 29, 2010I have 2 dropdownlist, one is to dropdown department, and another dropdown staffnames. the secong dropdownlist will based on the selection of department as each department has different staffs i have 2 tables department and staff in my database , in my department table i have departmentid as PK and departmentname, in my staff table i have staffname and departmentid as FK. So my ques is how am i going to populate staffname in the dropdownlist according to the selection of department.
View 9 RepliesData Controls :: Populate City DropDownList Based On District DropDownList Selection
Sep 2, 2012i have 2 DDL in my page that when users select item from ddldistric1 item in ddlcity1 will change these are my code
 protected void DDLcity1_SelectedIndexChanged(object sender, EventArgs e)
{
BindDistrictC();
}
private void BindDistrictC()
[code]...
Forms Data Controls :: Populate ListView Via LINQ To SQL
Nov 29, 2010Here's my C# cobe behind:
[Code]....
[Code]....
No data is loaded when the button (btnSearchWrd) is clicked. Instead, in the Firefox Error console, it listed these two errors:Error: item is undefinedError: ys.WebForms.PageRequestManagerServerErrorException: Could not determine a MetaTable. A MetaTable could not be determined for the data source '' and one could not be inferred from the request URL. Make sure that the table is mapped to the dats source or that the data source is configured with a valid context type and table name, or that the request is part of a registered DynamicDataRoute.
Web Forms :: Populate Listbox From Dropdownlist Selection?
Jan 3, 20111) 1 dropdownlist - department
2)Search button
3) 1 listbox that will display all the staff according to the selection of its department
So when i select the department and click search button, the listbox will be populated with the staff names.
Web Forms :: How To Populate A Dropdownlist With The Current Date
Jan 17, 2011I am trying to populate a dropdownlist with the current date (Month and Year only) and also the previous 9 months and year. I need it to change when a new month starts to always be the current and previous 9. Cant get my head round it.
View 2 RepliesWeb Forms :: Populate Label / Textbox From Dropdownlist
Nov 18, 2010I've been trying to find a solution to my problem for about 2 days now, and have found nothing. I am new to .net and not really sure how to accomplish this. I have 4 tables in a database, Vendors, RepairCos, Cons, ConRepairHistory. What I'm trying to do is make a page called SendOutForRepair.aspx that has a insert item template where the first control is a dropdownlist that is attached to the Cons table (got this figured out) and is populated with the Serial Number field. I would like the selection from the dropdownlist to populate the 2nd control (VendorID) that is also from the Cons table.
example record from Cons Table: Serial number VendorID
508585 1
so when 508585 is selected in the dropdownlist, it would populate VendorID with 1 (this is my issue)once this happens, the user would fill in the other fields (hours, issue, repairco (also a dropdownlist linked to RepairCos table), RA Number, DCI, DPU, DRB, Cost, Record (which is a identity field and primary key for table) and when the insert link is pressed will insert all 11 fields as a new row in the ConsRepairHistory table. so the new record in the ConsRepairHistory table would look like:
Serial Number VendorID Hours Issue RepairCoID RA Number DCI DPU DRB Cost Record
508585 1 2250 alarming 2 20222 11/16/2010 11/17/2010 null null 3
the RA Number, DCI, DPU, DRB, Cost all allow null values.
Web Forms :: How To Populate A Dropdownlist From Content From A Datbase
Mar 13, 2011I want to populate a dropdownlist from content from a datbase. But strugling to get the dropdown list to populate. the value is a primary key and the text value is a name associated with the id.
Here is my code...
[Code]....
[Code]....
Web Forms :: Unable To Populate DropDownList Using DataTable?
Aug 30, 2010I have a DropDownList and I want to populate using a DataTable.
[Code]....
But when appear the DropDownList show System.Data.DataRow why this don't show the real result of the DataTable ?
Forms Data Controls :: Populate A Dropdownlist From Other
Jan 28, 2011When someone selects one of the search criteria, I want the other dropdownlist boxes to re-populate with only the information from the current search and take out all other information if that makes sense. This search functionality works except it the dropdownlist boxes stay populated with all information originally loaded from the database. Here is my code:
[Code]....
Web Forms :: Populate DropDownList With Looped Numbers?
Apr 6, 2010I need to populate a dropdownlist with a set of numbers that are looped (0 - 10). The code I have below works as a static option:
Dim numbers() As String = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"}
...but I'd like to have a loop working something like this
Dim n As Integer = 0
For n = 0 To 10
Response.Write(n)
Next n
Forms Data Controls :: Data Populate From One Dropdownlist To Second One Dropdownlist?
Dec 2, 2010I am using 3 dropdown list in a gridview and the values for the dropdownlist is dynamic from database.based on first dropdown list selected value the values must fill to second dropdown and based on second dropdownlist selected value then items should load to 3rd dropdown and same for 4th dropdown list. Here if i select age,gender,sex, fist name, last name from the template name Human. The first drop down only populate the fields like Age,gender,Sex and so on., When the second dropdown list populate from the fields corresponding Template name Human, Finance, and so on.
View 3 RepliesWeb Forms :: How To Populate Datagrid Based On Dropdownlist Changing
Jan 24, 2010[Code]....
how to populate datagrid based on dropdownlist changing
Web Forms :: Populate 1 Dropdownlist From Another Using Databind To Oracle Database
Dec 14, 2010I want to create this scenario: The user selects a school from ddlSchool and this populates ddlStaff with a list of staffs in that school. i knw the codes for sql database but dont know how to do it for oracle.
View 5 RepliesWeb Forms :: Populate Dropdownlist With Column Name For Search Field?
Apr 16, 2010populating the dropdownlist with column name. I have a gridview that has 7 columns . I want to have a textbox search and dropdownfield where user can select column name and type a word in search box and click search so that text for that column name is being search and displayed in grid. how I can fetch just column names from DB and search ?
View 8 RepliesWeb Forms :: Dynamically Populate Gridview With Dropdownlist And Textboxes?
Jul 3, 2012Scenario is: I have multiple positions and multiple employees.Â
Now in one of my forms I know how many positions are there and corresponding to each position i want to show Employee DropDownList(DDL) and Text Boxes (Start Time, EndTime) and some comments for each position. Employee DDL will be populated from DB and Position name will be displayed on labels and that too are getting form DB
say at one instance i have 5 positions and then i want DDL of EmployeeName for each position and similarly TextBoxes for each positions Where i can ask user to full the information for each Position and user can save the data.
And at another instance similar behaviour is required if Positions are 10 , 3 , 8.
ADO.NET :: How To Populate Dropdown Using LINQ
Dec 1, 2010i am trying to use LINQ to populate a drop-down. This code works fine on my local machine, but I get an error when I try to run it on the live site.
The error occurs on this line: ddTicketMasterRoles.DataBind()
The error message is:
.Read_VB$AnonymousType_0`2(System.Data.Linq.SqlClient.Implementation.ObjectMaterializer`1<System.Data.SqlClient.SqlDataReader>)
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.MethodAccessException:
[code]....
Populate Dropdownlist From Another Dropdownlist With Objects In MVC 2
Dec 5, 2010I am trying to develop a simple MVC 2 timesheet application for my small business. I have a sort of mock model for now until I have a database in place, just to make things simpler while I develop the functionality.
[Code]....
But then I need to populate a second dropdownlist (taskDropDownList for the tasks associated with a particular customer) based on the selection the user chooses in the customer dropdownlist. But how do I do this exactly? I have seen examples with jQuery, but I'm not sure how to apply them to this situation. Also, the examples seem to just populate the lists with string values. I need to be able to access the objects with all their properties. Because the next thing I need to do is to be able to populate the TimeSegments list of the selected task with values from input fields (i.e. the hours worked for particular dates). And for that to be saved to the "model" (eventually to the database) in the controller, how do I get it there, unless the objects are all part of the same model bound to the View? I'm on rather thin ice with this since I still find the connection between the View and the Controller hard to handle, compared with e.g. Windows development, where these things are rather easy to do.
Forms Data Controls :: Populate Gridview When You Select The Dropdownlist?
Jan 20, 2010I am trying to populate a gridview when you select the dropdownlist.selected value. I don't want to use the sqldatasource or any other datasource. I am trying my best to achieve this, but didn't succeed till now. One of my friend said that i need to get the selected value from dropdownlist and search for the data in the database using the selectedvalue and populate the dataset and bind to the gridview.
View 2 Replies